Chosen Solution
best solvent to remove old glue when repairing ipad?
The best is a product called D-Limonene. You can get it on ebay for a couple of bucks. Its basically the active ingredient in GooGone. It will completely remove any adhesive, glue or goo. If you want an instant solution, Goo Gone works well. Just follow it up with some IPA to remove the residue.